QUIZ ON : c - INTRODUCTION

INTRODUCTION

00:00:00

Question No# : 01 out of 50

What is the output of the following code?<pre>main() { int a, b; a=b=4; b=a++; printf("%d %d %d %d", a++, --b, ++a, b--); }</pre>

A. 5 3 7 3

B. Syntax error

C. 5 4 5 3

D. 6 2 6 4

Question No# : 02 out of 50

Which of the following is the correct order of evaluation for the given expression? z = x + y * z / 4 % 2 - 1

A. * / % + - =

B. = * / % + -

C. / * % - + =

D. * % / - + =

Question No# : 03 out of 50

What will be the output of the following program? <pre>int main() { int x=5; printf(“%d %d %d”,x,x<<2,x>>2); }</pre>

A. 1 20 5

B. 5 1 20

C. 5 20 1

D. 20 1 5

Question No# : 04 out of 50

Find the output of following code : <pre>int main() { int i=-2; printf (“-i=%d”,-i); return b; }</pre>

A. â€“i=2

B. i=-2

C. â€“i=-2

D. â€“i=+2

Question No# : 05 out of 50

Which of the following is not a valid C variable name?

A. int number;

B. float rate;

C. int variable_count;

D. int $main;

Question No# : 06 out of 50

Which is invalid name of identifier?

A. world

B. addition23

C. test-name

D. factorial

Question No# : 07 out of 50

What is the difference between a declaration and a definition of a variable?

A. Both can occur multiple times, but a declaration must occur first.

B. A definition occurs once, but a declaration may occur many times.

C. Both can occur multiple times, but a definition must occur first.

D. A declaration occurs once, but a definition may occur many times.

Question No# : 08 out of 50

Who is father of C Language?

A. Bjarne Stroustrup

B. James A. Gosling

C. Dennis Ritchie

D. Dr. E.F. Codd

Question No# : 09 out of 50

What is the output of the following code:int x = 5;printf("%d", x++);

A. 4

B. 5

C. 6

D. Undefined

Question No# : 10 out of 50

Which programming method is followed in C language

A. Algorithm

B. Flow-Charts

C. Procedural

D. Object Oriented

Question No# : 11 out of 50

Which is correct with respect to the size of the data types?

A. char > int > float

B. int > char > float

C. char < int < double

D. double > char > int

Question No# : 12 out of 50

The preprocessor directives start with

A. //

B. /

C. #

D. /*

Question No# : 13 out of 50

What is required in each C program?

A. Input data

B. The program does not require any function.

C. Output data

D. The program must have at least one function.

Question No# : 14 out of 50

What is short int in C programming?

A. The basic data type of C

B. Qualifier

C. Short is the qualifier and int is the basic data type

D. All of the mentioned

Question No# : 15 out of 50

What is the output of this statement <pre>printf("%d", (a++));</pre>

A. The value of (a + 1)

B. Error message

C. Garbage

D. The current value of a

Question No# : 16 out of 50

What is the correct syntax to output "Hello World" in C?

A. print("Hello World");

B. echo("Hello World");

C. printf("Hello World");

D. None of these

Question No# : 17 out of 50

Which is the only C function all programs must contain?

A. start()

B. printf()

C. main()

D. getch()

Question No# : 18 out of 50

If a is an integer variable, then a = 5/2 will return a value

A. 2.5

B. 2

C. 2.000000

D. 2.500000

Question No# : 19 out of 50

In an assignment statement a=b; which of the following statement is true?

A. it Compare the variable a and the variable b are same.

B. The value of b is assigned to variable a but if b changes later, it will not effect the value of variable a.

C. The value of b is assigned to variable a but if b changes later, it will effect the value of variable a.

D. The value of variable a is assigned to variable b, and the value of variable b is assigned to variable a.

Question No# : 20 out of 50

What will be the output of the following code segment?<pre>int x = 24, y = 39, z = 45; z = x + y; y = z - y; x = z - y; printf("\n%d %d %d", x, y, z);</pre>

A. 24 39 63

B. 39 24 63

C. 24 39 45

D. 39 24 45

Question No# : 21 out of 50

Which of the following software translates source code into object code?

A. Compiler

B. Interpreter

C. Assembler

D. None of These

Question No# : 22 out of 50

Which one of the following is not a keyword in C language?

A. void

B. endl

C. float

D. switch

Question No# : 23 out of 50

What is the output of the following code?<pre>int a = 10, b = 5; printf("%d", a / b);</pre>

A. 5

B. 2

C. 0.5

D. 15

Question No# : 24 out of 50

Precedence is used

A. To determine which operator evaluated first from left to right.

B. To determine the level of an operator in a program.

C. To determine how an expression involving more than one operator is evaluated.

D. To check the expression is valid or not.

Question No# : 25 out of 50

What will be output if you will compile and execute the following c code?<pre>int main() { int a=5; float b; printf("%d",sizeof(++a+b)); printf(" %d",a); return 0; }</pre>

A. 2 6

B. 4 6

C. 2 5

D. 4 5

Question No# : 26 out of 50

What will be the output of the following code?<pre>int x = 5; printf("%d", ++x);</pre>

A. 4

B. 5

C. 6

D. 7

Question No# : 27 out of 50

Which of the following is a valid identifier?

A. 1return

B. return1

C. return

D. $return_1

Question No# : 28 out of 50

if a=8, b=3 and c=-5 are integers, then value of a*b/c is

A. -4

B. -2.8

C. +2.8

D. +3

Question No# : 29 out of 50

Which of the following is false in ‘C’ Programming Language

A. Keywords can be used as variable names

B. Variable names can contain digits

C. Variable names do not contain blank spaces

D. Capital letters can be used in variable names.

Question No# : 30 out of 50

What is the size of an int data type in C?

A. 2 bytes

B. 4 bytes

C. 8 bytes

D. 1 byte

Question No# : 31 out of 50

Which keyword is used to prevent any changes in the variable within a C program?

A. immutable

B. mutable

C. const

D. volatile

Question No# : 32 out of 50

Which one of the following is not a reserved keyword for C?

A. auto

B. case

C. main

D. default

Question No# : 33 out of 50

All keywords in C are in

A. LowerCase letters

B. UpperCase letters

C. CamelCase letters

D. None of these

Question No# : 34 out of 50

Which of the following cannot be used in identifiers?

A. Spaces

B. Digits

C. Underscores

D. Letters

Question No# : 35 out of 50

Which one of the following are not valid variable names in C?

A. float_int, keyword, A1

B. ANSI, ascii, cpu

C. valid, variable, name

D. None of the above

Question No# : 36 out of 50

Which is an incorrect variable name?

A. Id_No

B. ID_NO

C. IdNo

D. Id No

Question No# : 37 out of 50

What will be the output of the following code?<pre>int a = 10, b = 20; printf("%d", a + b);</pre>

A. 30

B. 1020

C. 10+20

D. Compiler error

Question No# : 38 out of 50

What is the output of the following code?<pre>int a = 5; printf("%d", a == 5);</pre>

A. 0

B. 1

C. 5

D. Undefined

Question No# : 39 out of 50

Which of the following language is predecessor to C Programming Language?

A. A

B. B

C. ADA

D. C++

Question No# : 40 out of 50

Which keyword is used to prevent a variable from being modified?

A. final

B. constant

C. const

D. static

Question No# : 41 out of 50

The format identifier ‘%i’ is also used for _____ data type.

A. char

B. int

C. float

D. double

Question No# : 42 out of 50

Which of the following is true about interpreters?

A. They execute programs faster than compilers

B. They translate the entire program at once

C. They translate and execute code line by line

D. They are not used in modern programming

Question No# : 43 out of 50

Which of the following is a correct way to declare an integer variable in C?

A. int num;

B. integer num;

C. num int;

D. num integer;

Question No# : 44 out of 50

What are the different types of real data type in C ?

A. float, double

B. short int, double, long int

C. float, double, long double

D. double, long int, float

Question No# : 45 out of 50

in C language the output of 14 % 4 is

A. 1

B. 2

C. 3

D. 4

Question No# : 46 out of 50

What is correct order of precedence in C?

A. Addition, Division, Modulus

B. Addition, Modulus, Division

C. Multiplication, Substration, Modulus

D. Modulus, Multiplication, Substration

Question No# : 47 out of 50

Which data type is most suitable for storing a number 65000 in a 32-bit system?

A. signed short

B. unsigned short

C. long

D. int

Question No# : 48 out of 50

What is the purpose of the #include directive in C?

A. It is used to define global variables

B. It is used to define a macro

C. It is used to include standard or user-defined header files in the program

D. It is used to include comments in the code

Question No# : 49 out of 50

which Input function does not show the character read from the input device

A. scanf()

B. getch()

C. getche()

D. gets()

Question No# : 50 out of 50

What is the purpose of the sizeof operator in C?

A. It returns the size of the variable in bits

B. It returns the size of the variable in bytes

C. It returns the size of the variable in kilobytes

D. It returns the number of elements in an array